I need functional replacement for default Wordpress theme (from 2.6.1 WP). I don't need any design, I just need PHP code producing identical HTML markup, but not being GPL licensed. I need license which allow me redistribute themes based on this PHP code, without obligations coming out from GPL.
It does not need to implement gradient in header, so whole functionality with JPG generation, gradient can be skipped.
If there are other features in default theme which can be removed to make project simpler (and cheaper) I'm open for suggestions.